Senior Electromechanical Engineer

3one4 Capital; Chennai District; On-site; INR 2,800,000 - 4,000,000; Full time

Job summary

3one4 Capital in Chennai is seeking a Senior Electromechanical Engineer to own packaging, housing and mechanical integration of high‑voltage battery modules and powertrain systems for the eVTOL airframe.

You will design enclosures and mounts, perform advanced 3D CATIA modeling, apply GD&T per ASME Y14.5, drive DfM/DFT, select aerospace alloys and TIMs, and coordinate HV isolation with electrical teams to ensure safe clearances.

Qualifications

• 6–9 years of dedicated mechanical or electromechanical packaging experience within the aerospace, electric vehicle (powertrain/battery), or high‑reliability defense sectors.
• Advanced, hands‑on expertise in CATIA V5/V6 (3DEXPERIENCE), specifically utilizing advanced assembly design, sheet metal workbenches, and mechanical part design.
• Expert‑level knowledge of GD&T and a proven track record of resolving complex multi‑part tolerance stack‑ups.
• Direct experience designing parts optimized for CNC machining, sheet metal fabrication, structural bonding, and lightweight casting or molding.
• Excellent understanding of ingress protections, waterproof/dustproof designs, clearance & creepage distances, and electrical sub‑assemblies.
• Experience prototyping as well as production planning environments with full certification through DGCA / CEMILAC / ARAI

Responsibilities

• Enclosure & Packaging Design: Design robust, lightweight enclosures, mounts, and brackets for high‑voltage battery packs, power electronics, PDUs, and inverter modules.
• Advanced 3D Modeling: Use CATIA V5/V6 to build complex electromechanical assemblies with surface modeling for aerodynamic integration.
• Precision Engineering & GD&T: Apply GD&T per ASME Y14.5 to ensure flawless fitments and perform tolerance stack‑up analyses.
• Design for Excellence (DfM/DfA/DfT): Inject DfM/DFX principles to drive down component counts and simplify shop‑floor production.
• Material & Structural Selection: Select aerospace alloys, structural adhesives, TIMs to maximize heat dissipation and safety.
• HV Isolation Engineering: Coordinate with electrical team to design mechanical clearances respecting creepage and clearance for HV components.
• HV Box Design: Assemblies involving Contactors, Busbars, Fuses, Pyrofuses, and disconnect switches.

Skills

Aerospace packaging experience

GD&T proficiency

CATIA CAD mastery

DFM/DFT knowledge

Electrical HV isolation understanding

Certification/compliance experience

Tools

CATIA V5/V6 (3DEXPERIENCE)

Job description

Job Description

Senior Electromechanical Engineer

Department: TEC Electrical & Battery

Experience Level: 6–9 Years

Location: Chennai, India

Position Type: Full-Time / New Role

About the Role

As a Senior Electromechanical Engineer, you will own the physical packaging, structural housing, and mechanical integration of our high-voltage battery modules and electrical powertrain systems into the eVTOL airframe. This is a highly cross-functional role bridging electrical power architectures and structural mechanics. You will transform complex electrical systems into flight-ready, structural assemblies, ensuring optimal thermal paths, structural integrity under high-g flight envelopes, and strict optimization for aircraft weight and mass balance.

What You Will Do

• Enclosure & Packaging Design: Design robust, lightweight, and crash-worthy enclosures, mounts, and structural brackets for high-voltage battery packs, power electronics, power distribution units (PDUs), and inverter modules.

• Advanced 3D Modeling: Utilize CATIA V5/V6 (3DEXPERIENCE) to build complex electromechanical assemblies, leveraging surface modeling for aerodynamic integration and airframe routing constraints.

• Precision Engineering & GD&T: Apply rigorous Geometric Dimensioning & Tolerancing (GD&T) principles per ASME Y14.5 to ensure flawless fitments between machined enclosures, sheet metal shields, and composite airframe interfaces. Perform detailed tolerance stack-up analyses.

• Design for Excellence (DfM / DfA / DfT): Inject Design for Manufacturing, Assembly, and Testing principles early into the development lifecycle to drive down component counts, minimize assembly cycle times, and simplify shop‑floor production.

• Material & Structural Selection: Select and qualify aerospace‑grade alloys, high‑performance plastics, structural adhesives, and advanced Thermal Interface Materials (TIMs) to maximize heat dissipation while ensuring structural safety.

• HV Isolation Engineering: Coordinate closely with the electrical team to design mechanical clearances that respect strict creepage and clearance boundaries for high‑voltage components.

• HV Box Design: Assemblies involving Contactors, Busbars, Fuses, Pyrofuses, Manual Service Disconnect switches, etc.

What We Are Looking For (Must-Haves)

• Experience : 6 to 9 years of dedicated mechanical or electromechanical packaging experience within the aerospace, electric vehicle (powertrain/battery), or high‑reliability defense sectors.

• CAD Mastery : Advanced, hands‑on expertise in CATIA V5 / V6 (3DEXPERIENCE), specifically utilizing advanced assembly design, sheet metal workbenches, and mechanical part design.

• Drafting & Stack-up Depth : Expert‑level knowledge of GD&T and a proven track record of resolving complex multi‑part tolerance stack‑ups.

• Manufacturing Knowledge : Direct experience designing parts optimized for CNC machining, sheet metal fabrication, structural bonding, and lightweight casting or molding.

• Exposure to Electrical System Design constraints : Excellent understanding & design capability on - Ingress protections, Water proof / Dust proof designs, Good understanding of clearance & creepage distances, Switches Panel creation, Electrical sub‑assemblies.

• Certification / Compliance : Experience in prototyping as well as production planning kind of environment. Ideal candidates should have designed, developed & taken at least one such development through full certification through the likes of DGCA / CEMILAC / ARAI.

Preferred Skills (Good-to-Have)

• Working knowledge of Mechanical Shape Design within CATIA for complex surface modeling.

• Experience packaging high‑voltage systems (upto 800VDC) and managing mechanical safety barriers against electric shock or thermal runaway.

• Familiarity with environmental testing standards like RTCA DO-160 (specifically regarding vibration, shock, and thermal profiles).

• Excellent understanding of electrical system design, electrical properties of materials, dielectric strength, creepage & clearances, thermal properties of materials.

• Good understanding of - Grounding / bonding required for electrical components, Enclosure design & fabrication for electrical systems, Design for Ingress Protections.

• Exposure to material selection for electrical products.